out = open ("output.jh")

towrite= a+b
out.write (towrite)

When you want to put an output to a file. instead of the information going right next to eachother how could they go one over the other in the file. This would be for many different outputs.

over? You mean on a different line??
If so, you should use a line break.

out = open('output.jh')
towrite = a+'\n'+b
out.write(towrite)

over? You mean on a different line??
If so, you should use a line break.

out = open('output.jh')
towrite = a+'\n'+b
out.write(towrite)

where would the line break go

ltwrite = v[6]+ " " + (int (b))
fout.write (ltwrite)

First off, you do not write integers to a file. You convert them to strings first.
Second, the line break is '\n'.
It goes between the values you are trying to separate.

ltwrite = str(v[6])+ "\n" + str(b)
fout.write (ltwrite)

Personally, I like to put the items by appending to a list, then I append the '\n' using join.

ltwrite = []
ltwrite.append(str(v[6]))
ltwrite.append(str(b))
fout.write('\n'.join(ltwrite))
fout.close()